545240651636 has 24 divisors (see below), whose sum is σ = 1037604233736. Its totient is φ = 249649136640.

The previous prime is 545240651633. The next prime is 545240651723. The reversal of 545240651636 is 636156042545.

It can be written as a sum of positive squares in 4 ways, for example, as 110556250000 + 434684401636 = 332500^2 + 659306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545240651633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108352145 + ... + 108357176.

It is an arithmetic number, because the mean of its divisors is an integer number (43233509739).

Almost surely, 2^545240651636 is an apocalyptic number.

It is an amenable number.

545240651636 is a deficient number, since it is larger than the sum of its proper divisors (492363582100).

545240651636 is a wasteful number, since it uses less digits than its factorization.

545240651636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216709379 (or 216709377 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 47.

The spelling of 545240651636 in words is "five hundred forty-five billion, two hundred forty million, six hundred fifty-one thousand, six hundred thirty-six".